<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div class="" id="app">
        <button @click="add">添加元素</button>
        <div style="color:red" v-for="(item,index) in list">{{item}}</div>
    </div>
    <script src="./vue-2.5.21.js"></script>
    <script src="./数组变化.js"></script>
</body>
</html>